Matrix designed the original 906-foot-long, two-lane, seven-span Central Park Bridge in 2011. Phase II saw the widening of the new bridge to four lanes and with the opportunity of expanding it to six lanes in the future. Matrix was retained to design an additional 34-foot-wide bridge deck capable of supporting two additional lanes and a 13-foot-wide sidewalk. The work included designing additional intermediate piers to accommodate the wider bridge deck. The bridge spans Smith Road, the Regional Transportation District (RTD) A-Line Commuter Rail, Union Pacific Railroad (UPRR) tracks, Sand Creek, and the Sand Creek Regional Trail. Due to the roadway alignment and the intersecting features below the bridge, the bridge superstructure was designed with variable spaced girders and variable angled piers. The bridge decks needed to provide continuous traffic flow even while connecting. Our Team recommended a closure pour that allowed traffic to flow in both directions as the bridges were structurally joined.
Matrix coordinated with RTD and UPRR to negotiate scheduled railroad shutdowns during construction and provided construction observation services that included daily inspections in conformance with plans and specifications, daily logs, quantity takeoffs, and pay application review. Our Team further supported construction by reviewing submittals and responding to requests for information.